GPA Calculation Formula
GPA = Total Grade Points ÷ Total Credit Hours
Grade Points = Grade Point Value × Credit Hours for each course
Step-by-Step GPA Calculation
Step 1: Assign Grade Points
Convert each letter grade to grade points:
- • A / A+ = 4.0
- • A- = 3.7
- • B+ = 3.3
- • B = 3.0
- • B- = 2.7
- • C+ = 2.3
- • C = 2.0
- • D = 1.0
- • F = 0.0
Step 2: Multiply by Credit Hours
For each course, multiply the grade points by the credit hours to get quality points.
Quality Points = Grade Points × Credit Hours
Step 3: Add All Quality Points
Sum up all the quality points from all your courses.
Step 4: Add All Credit Hours
Sum up all credit hours from all your courses.
Step 5: Divide to Get GPA
Divide total quality points by total credit hours.
GPA = Total Quality Points ÷ Total Credit Hours
Example GPA Calculation
Sample Semester Courses:
| Course | Credits | Grade | Points | Quality Pts |
|---|---|---|---|---|
| Calculus | 4 | A | 4.0 | 16.0 |
| English | 3 | B+ | 3.3 | 9.9 |
| Chemistry | 4 | B | 3.0 | 12.0 |
| History | 3 | A- | 3.7 | 11.1 |
| TOTALS | 14 | - | - | 49.0 |
GPA = 49.0 ÷ 14 = 3.5
Calculating Cumulative GPA
To calculate cumulative GPA across multiple semesters:
- Calculate total quality points from ALL semesters
- Calculate total credit hours from ALL semesters
- Divide total quality points by total credit hours
Quick Method for Cumulative GPA:
New Cumulative GPA = (Current GPA × Current Credits + New Semester Points) ÷ (Current Credits + New Credits)
Weighted GPA Calculation
For weighted GPA (AP, IB, Honors classes), add 1.0 to the grade points:
- A in AP class = 5.0 (instead of 4.0)
- B in Honors class = 4.0 (instead of 3.0)
- C in IB class = 3.0 (instead of 2.0)
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